Loose-leaf binder



Dec. 5, 1950 w. JOHNSTONE El AL 2,532,771

LOOSE-LEAF BINDER Filed April 10, 1946 Iwyenfow I Lam's W U221 7757mm,

1 GLZ/T 5 2& I Aft VJ Patented Dec. 5, 1950 Louis William Johnstone,

Warlingham, and

Charles Edward Gilbert, Chipstead, England, assignors to BernardBercovitz, Toronto, On-

tario, Canada Application April 10, 1946, Serial No. 660,954

/ In Great Britain February 8, 1945 Section 1, Public Law 690, August a,1946 Patent expires February 8, 1965 2 Claims. (01. 129-1s) Thisinvention relates to books, catalogues, files, card indices, and thelike, and more particularly to what are known as loose leaf binders orany other collection, group, or pluraity of documents, papers, cards,tablets or the like, hereinafter referred to as sheets, held togetheralong one edge so that the contents may be accessible and where it isrequired that one or more of the sheets may be readily detached orinserted.

For example, manufacturers and marketing organisations selling a varietyof goods the nature or price of which is constantly changing, find itexpedient to publish such a book or catalogue describing theircommodities and this invention is particularly efficacious when appliedto books or catalogues for such a purpose. The construction of devicesto perform the above described function has in the past involved the useof relatively expensive covers with metal fittings and other elaboratedvariations of the bookbinders craft, and the object of this invention isto provide a simple device for the retention of sheets and to facilitatetheir insertion or withdrawal and to occupy the minimum space beyond thebulk of the sheets.

The following is a description of one embodiment of the invention,reference being made to the accompanying drawings, in which:

Figure l is an exploded perspective view of the various parts of thebinder;

Figure 2 shows the parts of Figure l assembled to provide the spine andsliding member shown separated from one another;

Figure 3 is a perspective view showing the sliding member assembled withthe spine and in a position to receive a stack of sheets;

Figure 4 is a perspective view showing the stack of sheets assembled inthe binder, as shown in the previous figures.

Referring to the construction shown in the drawings, the spine of thebinder may be built upfrom an inner channel-shaped member having itsside walls cut away at each end, as indicated at H and i2. The cut-awayportion ll is arranged to be filled by a channelled filling piece IS,the bottom wall of which, when in position in the channel member ID,provides a web it extending between the side walls of the other memberH3. The inner channel member 10 is embraced by an outer channel member 9which extends from the cut-away portion l2 to the other end of themember lit, and serves to hold the filling piece it in position. Asliding member is provided in the form of an outer sliding channel iii,in which. is nested an inner channel filling member l6 which is sosecured in position. that the, bottom wall. thereof i1 is spaced awayfrom the bottom wall of the outer channel and forms a web. Thiscomposite sliding member is arranged slidably to engage the reduced.extension of the channel member is provided by the cut-away portion [2so that the extension lies between the web I! and the bottom wall 18 ofthe sliding member. As will be seen from Figure 3, this binder isarranged to hold in position a stack of sheets having a tongue l9 alongone side thereof which is under-cut at 2% to provide overlying portions2|. When it is required to insert the sheets the slide is moved into theposition shown in Figure 3 so that the distance between the edges of theweb portions it and I7 is such as to enable the tongue [9 to be insertedbetween them. The slide is then moved into the position shown in Figure4, in which the webs l4 and I! move into the under-cut portion 26. Thesliding member 15 is prevented from detachment from the part 9 by meansof a tethering tape 22. All the above parts may be formed fromcardboard, vulcanised fibre, or plastic sheet.

We claim:

1. A binder adapted to retain a plurality of sheets having along oneside thereof at least one tongue undercut to provide overhangingportions on each side thereof, which binder comprises an innerchannel-shaped member having its side flanges partially cut away at eachend, a channelled filling piece arranged in the cutaway portion at oneend of said inner channelshaped member, the back of said channelledfilling piece forming a web extending between the cutaway flanges ofsaid inner channelshaped member at said end and spaced from the backwall thereof, an outer channel-shaped member embracing said innerchannel-shaped member and said channelled filling piece and extendingshort of the cutaway portion at the other end of said innerchannel-shaped member, said outer channel-shaped member serving to holdsaid channelled filler piece in the cutaway portion of said innerchannel-shaped member, and a sliding channel-shaped member comprisinginner and outer channels, said inner channel being so secured to saidouter channel that the back wall of said inner channel is spaced awayfrom the back wall of said outer channel and forms a web extendingbetween the flanges of said outer channel whereby said slidingchannel-shaped member is adapted to slidably engage the cutaway portionof said inner channelshaped member at said other end.

2. A binder adapted to retain a plurality of sheets having along oneside thereof at least one tongue undercut to provide overhangingportions on each side thereof, which binder comprises an innerchannel-shaped member having its side flanges partially cut awa at eachend, a channelled filling piece arranged in the cutawa portion at oneend of said inner channelshaped member, the back of said channelledfilling piece forming a web extending between the cutaway flanges ofsaid inner channelshaped member at said end and spaced from the backwall thereof, an outer channel-shaped member embracing said innerchannel-shaped member and said channelled filling piece and extendingshort of the cutaway portion at the other end of said innerchannel-shaped member, said outer channel-shaped member serving to holdsaid channelled filler piece in the cutaway portion of said innerchannel-shaped member, a sliding channel-shaped member comprising innerand outer channels, said inner channel being so secured to said outerchannel that the back wall of said inner channel is spaced away from theback wall of said outer channel and forms a web extending between theflanges of said outer channel whereby said sliding channelshaped memberis adapted to slidably engage the cutaway portion of said innerchannelshaped member at said other end, and a flexible tether securedbetween the outer channelshaped member and the sliding channel shapedmember to limit longitudinal movement therebetween.

LOUIS WILLIAM JOHNSTONE.

CHARLES EDWARD GILBERT.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,432,453 Finger Oct. 17, 19221,688,514 Arends Oct. 13, 1928 2,116,078 Mevi May 3, 1938 FOREIGNPATENTS Number Country Date 2,349 Great Britain 1898 v 131,065 Germany1902 236,001 Germany 1911 561,823 France 1923

